Should I Call Him? Advice Please

Last weekend this guy I've been talking to came over and we hung out in his car for about 20 mins, we made out and I ended up giving him a bj (which he left right after). Tuesday I didn't hear from him. Then Wednesday he called wanting to come over but my brother was home so I told him to come Thursday when I had the house to myself. He said OK don't forget to call me. The next day I texted him saying: "are you still cumin?..or". He never replied and still hasn't 5 days later. What should I do?

* I know he works, he has two kids and is living with his ex/baby mama (supposedly their not together). He has also done this before where I texted him and he didn't respond but called a month later. Why does he do this? I'm 19 he's 23 going on 24